While a pro-Clinton ad was played before a video by the “al-Hayat Media Center” — the media wing of ISIS.

Facebook has also had problems with ad misplacement. A promoted post for the video to "Stacy's Mom," a classic song about a teen being in love with their girlfriend's mom, appeared next to a real life example of it.

Reddit/Facebook

7/

Just after a couple gets imprisoned for attempting to cremate their dead toddler is probably not the time to big up people who can grill like an expert.

8/

Stories around babies can be difficult to advertise around, as this intrusive Medal of Honor video game ad proves.

Reddit/MSN

9/

This is even worse. News of Chile's earthquake was inappropriately interrupted by meteors from the ad for the movie "2012."

10/

This ad for Aflac, featuring a duck, looks like it must be deliberate.